Function isla_axiomatic::litmus::instruction_from_objdump

pub fn instruction_from_objdump<'obj>(
    opcode: &str, 
    objdump: &'obj str
) -> Option<String>

For error reporting it’s very helpful to be able to turn the raw opcodes we work with into actual human-readable assembly. To do this we use a regex to pair up the opcode with it’s disassembly in objdump output for the litmus test.